98952017-09-16ADR Magnets Operating at 30-40K, Phase IICompletedJun 2011Dec 2014This program is designed to achieve high operational efficiency for superconducting ADR magnets in space, and to meet space launch requirements. The overall technical objective is to manufacture an efficient magnet using YBCO HTS tapes that can generate 3 T at 30-40 K with an operating current of 5-7 A. To meet this goal we will conduct research and development in areas of: 1) Characterization and use of 1.25 mm YBCO tape in ADR coils. 2) Fabrication of narrower YBCO tapes. 3) Development of low resistance tape-to-tape electrical joints. 4) Quench protection of YBCO ADR coils operating at 30-40 K. 5) Design and manufacturing of a 3 T, YBCO ADR magnet. 6) Testing of the 3 T magnet at 30-40 K. Currently many commercial superconducting magnets use Nb-Ti or Nb3Sn wires and are cryogen-free. These magnets use commercial cryocoolers that can achieve cooling capacity of 0.5-3 W at 4-10 K. The input power requirement of these expensive cryocoolers range between 3-5 KW, and they can weigh in access of 100 Kg. Magnets fabricated with HTS wires/tapes that operate at 30-40 K can be operated by simple and less expensive single-stage cryocoolers. This breakthrough technology will have a significant impact on efficiency of superconducting magnets used in motors, actuator, imaging devices, high-power electric propulsion, and detectors with potential use in space applications.33632468Science Instruments, Observatories, and Sensor Systems32998.1Remote Sensing Instruments and Sensors38228.1.6Cryogenic / Thermal324114Thermal Management Systems326614.1Cryogenic SystemsSBIR/STTRSpace Technology Mission DirectorateGoddard Space Flight CenterGSFCNASA CenterGreenbeltMDAmes Research CenterARCNASA CenterMoffett FieldCAJet Propulsion LaboratoryJPLNASA CenterPasadenaCAMarshall Space Flight CenterMSFCNASA CenterHuntsvilleALSuperconducting Systems, Inc.IndustryBillericaMAAlabamaCaliforniaMassachusettsMarylandTherese GriebelCarlos TorrezGary JahnsJames G TuttleShahin Pourrahimi